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Finding the Fourth Proportional to 306,843.36, 423,416.88 and 170,867.04

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Solution

The fourth proportional to 306,843.36, 423,416.88 and 170,867.04 is: 235,781.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,843.36 : 423,416.88 = 170,867.04 : x
  2. Step 2: Convert to fraction form
    306,843.36/423,416.88 = 170,867.04/x
  3. Step 3: Cross multiply
    306,843.36x = 423,416.88 × 170,867.04
  4. Step 4: Simplify right side
    306,843.36x = 72,347,988,971.64
  5. Step 5: Solve for x
    x = 72,347,988,971.64/306,843.36
  6. Step 6: Final answer
    x = 235,781.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.